Dump-truck.



Patented Mar. 27.1917. 2 SHEETS-BREE l DUMP mucx. APPLICATION FILED FEB-2h 1915- 0. H. CLARK & H. L.-BEIACH.

22: o 30 o o o o M .m. E b r ...H. .-M

WITNIBSIS c. u. "cum & H. L. BEACH.

DUMP TRUCK. APPL'lcAnou FILED m. 21 m5.

1 Patented Mar. 27,1917.

2 SHEETS-SHEET, 2.

V INVENTOIG W UNITED STATES PATENCroFFIcn CHARLES H. CLARK, or, GRAFTON, am) HOWARD L. BEACH, or nnonwoonfrmms n- DUMP-TRUCK. 1 Specification of Letters Patent.

To all whom w my concern Be it known that we, (bunnies H. CLARK and I-lowaun "iiaacn, citizens of the United States and residents of Grafton and Edgewood, r:spertivcly, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in I" .mip-li-l'|cl s, of which the following is a specification.

The primary object, of this invention is to providea motoopropelled dump truck of simple construction adapted to be easily and conveniently operated for dumping the load at the rear or at either side of the truck, the dumping mechanisn'i being movable to position for dumping along with the truck body and being equally effective in all positions. i M

The invention includes rocker supports for the body of improved construction, together with improved means for sustaining the body in normal or upright position Provision is also had for holding the body upright and against displacementin any direction.

A further object is to providethe dump ing body with a highly efilcient end gate,

together with improved means'foi oausing the movements of the body toward, and from dumping position to automatically op enand close the gate, the gate when open;c0nstituting a chute for directing the discharging load. The arrangement is such that the movements of the gate are automatically controlled in all positions in whichthe'bodymay be placed for dumping, whether at the rear or at either side. 2

It is further characteristic of the inven tion that the body and body dun'ipihg mechanism may be applied to various makes of motor-truck chassis, thereby eliminating the necessity of providing a truck frame of special design. In the accompanying drawings, Figure 1 is a side elevation of a truck embodying the I invention, the body being shown in normal position in full lines and in dumping position in dotted lines. Fig. 2 is a top plan of the truck with the body shown in the norma l or full line position of Fig. 1, and with portions of the body floor broken awayto disclose the operating mechanism located therebeneath. Fig. 3 is a longitudinal section of the body and its mounting, illustratof many makes for a aentd*1ira l. 27, 1917, a Application filed February 27, 1915. Serial No. 10934. n

ing the position ihereof when the body i's" dumplng at one si le of the truck or at right the longitudinal :rame-fornungsidegi'r' post 5, and operators seat (5, the engine an associated. parts leing located-townrd the forward end of the frame and'out of=tlie of the bodyand buly operatingfniccham located at the rea Therotatable mounting for truck bodywhereby it may dump at the rear or 'at either side, consist, of a conventionalforin lo f l i of turn-table 8 hav ng its fixed end portion secured to girders i and wltl'irol'ler beariir 10 of dsual and well known construction in as angles to theposi 31011 shown in Fig. i 1. l 3

The chassis is t pical terposed between iurn-table parts 8 and '9 so that part 8 may turn freely aboutits axis 75 11. ;Secured to tie upper side of table, 8" are separated paralel rocker trackways 12, the? inner ends of which terminate in a liii which approximately intersects axis '11, t [e trackways.being referably inc]inedup"-' wardly from their ends to oppose the rocker movement when tho body is mov ng toward dumping position, A

Body 7 is preferably fabricated from steel plates and shapes i icluding transverse floor '85 $111313, and secured betweenthese SlllS and" ln'iniediately beneat 1 floory14 are the rockelql frames 15. Each, of these frames has at its under side a rocker forming segmental par;

tion 16 and a flat four-supporting top po'r-[QOfj' tion 17, also vertical side portions 18 which are secured to sills 13. Trackways 12 and rockers 16 are provided with interfitting; projections and depressions to provide the usual coglike connections 'for' preventinglli shifting of the roikers; The rockers are preferably so ('llSlNHfid with relationto the loaded body that the weight tends to hold the body in upriglt position. While the 1 center of gravity sliifts as thet'body rocks l o in dumping, the up ward inclination of the] rocker trackways orunteracts this tendency d p n movement of surging tendency. f l When the body is in upright position, as in Fig. 1, the rocker frames 15compiise upin such manner as to relieve the right parallel supports therefor which are in line with each other transvelsely of the body, while a third and forwardly positioned support is provided by lug 19 on gear casing 20, the forward floor sill 13' resting on said lug when the body is in normal position. Thus, the body is positively supported on turn-table 8 at three points, and these sup- .ports taken in connection .with the means hereinafter described for resistin movement either backwardly .or forwartlly from normal position results in holding the body absolutely in'nnovable until released 'for dumping. i

The dum 'iing gear is mounted on turntable 8 and includes the gear casing 20 in which is journaled shaft 2l having cranks 22 which are connected by links with transverse rod 2+ secured to rocker frames 15. A gear wheel 25 on shaft 21 and inclosed by casing 20 meshes with worm 26 on operating shaft 27, the latter journaled in the gear casing and extending forwardly beyond the front end of body 7 when the, latter is in normal position, the extremity of the shaft" carrying hand wheel 28. With the body in normal position as in Fig. 1 the worm gearing comprises a lock againstbackward or tilting movement of tl1e body, while abnormal forwardly tilting movement thereof, such as might result from loading the body more heavily at its front end than at its rear, is precluded by links 29 having their outer ends secured to traekways 12 and their inner, and upper ends 30 secured to rod 24 and slotted as shown to afford the movement necessary for the dumping operation. Thus it will be seen that the body when in normalposition is securely held against displacement in any direction. A

- gravity latch 31' hinged to turn-table 8 is' adapted to engage lugs 32 located at the front and at either side of the fixed table base 9 for locking the turn-table with the body turned in position for dumping at the rear or at either side.. The latch-may be re leased by rod'33 which extends toward and is within easy reach of hand-wheel Even with the body fully loaded it may be readily rotated. by'means of the turn-table, the op- "ator simply releasing the latch and pushmg or pulling the body around to discharge its load at one side or the othcr ofthe truck.

The end gate 34 is mountedto turn outwardly-and downwardly on hinges"35, the

latter mounted in the rear end of the body frame beneath floor. The gate is of chute-' like form, being incline'd upwardly and outwardly from"its"l'ower ed e with a central panel-like portion 36 and two diagonally disposed sloping panel-like side portions 37,

and projecting-from each of the latter are i the wall-forming wings 38 which overlap the side walls of the hody'when the gate is closed. The 'gate opens outwardly and downwardly and when in open position panels 37 deflect and concentrate the discharging load on central panel 36, thereby forming a relatively narrow stream for dis- .charging into a coal hole, or for contracting either side, arms 40 depending from thegate beneath hinges are connected by links 41 to a non-dumping portion of the structure, preferably to the extremities of trackways 12, as indicated at 42. The downwardly tilting movement of the body so increases the distance between hinges 35 and points 42 that the gate is swung outwardly and downwardly, as in Fig. 3, into the chuteforming position above described, and is positively held in that vposition as long as the body remains tilted, The righting movement of the body results in automatically restoringthe gate to closed position in. which it is securely held by links 41 so long as the body remains upright.

The improved truck is adapted for all services in which a dumping vehicle may be used. And while its facility for dumping either at the rear or at either side renders it peculiarly well adapted. for coal haulage, it will be understood that sand, gravel and other materials capable of dumping may be transp'rju'ted and dumped with equal facility. There is ample clearance for dumping a either side without interferring with the ground wheels. \Vhen in lowered vor (lumping position the chute-forming end gate is relatively close to the ground or pavement, and at the same time is spaced well outwardly from the ground. wheels so that the load is discharged clear of the running gear and has no tendency to flow back beneath the true-k, an objection commonly experienced with dumping vehicles. \Vhile the llIlPTOVtXl truck is designed prin'larily for mbtm-hse, the invention is not limited thereto. g

' The end gate and gate actuating means are claimed in our application filed January 6, 1916. Serial No. 70,601. y

1. A dump truck comprising a truck wheel supported frame, trackways carried thereby, a tilting body supported in an elevated position -"by and provided -with depending rockers traveling on said trackways as the body tilts to and from 11 right and dumping-positions. upwardly ant forwardly inclined links at their lower endspivotally coupled to said frame and at'th'eir upper ends having longitudinal slots receiving pivots fixed to the body at the central portion thereof and arranged to limit dump-i ing movement'and abnormal forward tilting of the body, and means for tilting the body.

wheel supported frame, trackways carried thereby, a tilting body provided with supporting rockerstravehng on said trackways 91s the body tilts to and from upright and dumping positions, said rockers depending from the central portion of the body,. upwardly and forwardly inclined links at their lower rear ends pivotally coupled to the a "frame and at their upper front ends pivotally joined to the central portion of the body and arranged to limit dumpin and forward tilting-movements ofthe bo y and to aid in holding the rockers down on the track- 7 y ways when the body is locked in upright position, and means for tilting the body and v to aid saidlinks in looking the vbody and its rockers against vertical movement from said trackways when the body is in upright position.

3. A dump truck comprising a truck frame, a turn table supported thereby and rotatable on a vertical axis, separated parallel rocker trackways on said turn table, a tilting truck body, separated parallel depending rockers secured to the body ap: proximately midway its length and fitting the trackways and constituting two central supports for and on which theybody is approximately balanced, an advanced central )ody support on said turn table, means for exerting forward and downward pull on the body to tightly draw and lock the rockers down on the trackvways when the body is in normal upright position, said means embodying body tilting mechanism, and means pivotally. joining the rear portion of the turntable and the body to resist abnormal forward tilting'of the body and to be tightencd by said forward and downward pull.

4. In a dump truck, in combination, a truck frame,' spaced parallel trackways thereon, a transverse crank shaft provided with actuating means, a tilting body provided with cqj trel depending rockers adapted to travel 01 trackways and oil-which the body is approximately balanced, a transverse rod extending between and secured to the upper portions of said rockers, an upwardly and forwardly extending slotted stop link at its upper forward end. pivotally joined to said rod and at its lower rear end pivotally coupled to the frame, and a body tilting and locking link pivotally connecting' the crank shaft and said rod.

5. In. a dump truck, the combination of a truck frame, a trackway supported thereby, a tilting truck body, a rocker fixed to and depending from the central portion of said body and fitting said trackway, a holding device coupled to the central portion of said body and withsaid frame to resist abnor 2. A dump truck comprising a truck mal forward tilting of the body when in normal upright position and also to' resist abnormal dumpjng movementof the body and to aid in locl ring the rocker down on the trackway when the body is in upright position, and body tilting mechanism carried by the frame ard coupled to the body approximately ove said rocker and arr-an ed .to exert downward pull on the rocker W en by and rotatable on a vertical axis, a dumping body mounted on and carried by said turntable, said body being approximately balanced when supported on said table in normal upright position, said turntable provided with a sto to engage the central portion of the body bottom when the body is in upright position, means to prevent abnormal forward tilting of the body when engaging said stop, and body tilting and lockin mechanism comprising a' transverse cranfi shaft carried by the turntable and provided with lock gear actuating means and a pitman from said crank shaft and pivotally joined to the ct ntral portion of the body 9 and in rear of said stop, substantially as. described.

' 7. In combinai ion, in a dump truck, a supporting frame having trackways, a dumping body having 101 gitudinally-arranged rockers depending f1 om its central portion, said body being approximately balanced on said rockers, said I( ('fkers traveling longitudinally on said tr: ckways as the body tilts to and from upright and dumping positions, means to hold Sll(l body against abnormal forward tilting i eyond upright position and .from lifting frun said trackwiay when in upright adjustncnt, and body tilting and locking mechani =m cmnprising a transverse crank shaft curl ied by the frame 'and provided with lock gear actuating means and a body r-ontrollix g a. tilting pitman pivotally connecting said shaft and the portion of the body :llN) e the rockers and arranged longitudinally thereof in the general direction of the travel of the rockers on the trackways as the bod moves to and from dumping position, wl ereby said pitman extends warwardly from the crank shaft to its point of attachment w th the body \vhenthe body is in upright and all other positions in its range of movement.

8. In combination, in a dump truck, Sup porting frame, a turntable thereon rotatable on a vertical axia, a dumping body approxi-' mately balanced and mounted on said table, a fixed upright gear case on said table and located approxi matcly under the central portion of said Jody and forming a rest, a

transverse crank shaft mounted in said case and provided with a worm gear, a shaft mounted in and carried by said ease and provided with a orm foractuatin said gear, said shaft extending forwardly ongitudinally'of and below said body and above thetable and; frame and in advance of the front end of the body provided with an op erating handle, and a body tilting and controlling pitm'an couplin said crank shaft and body together, su tantially as described.

' 9. In combination, in a dump truck, a supporting frame, truck wheels, a turntable supported on the frame and rotatable on .a vertieal axis, trackways on the table having approximately horizontalfront portions and upwardly inclined eieva-ted rear end portions, a dumping body overhanging said truck wheels and having central depending 4 body clear of said wheels as the body-60m- .pletes its dumping movement, said rockers traveling d'own' said inclined ends of the ways to facilitate the return movement of the body, and body dumping and controlling mechanism between the table and body;-

In testimony whereof we aflix-our signatures in presence of two witnesses.

CHARLES H. CLARK. HOWARD L. BEACH'.. Witnesses:

M. J. FENDNER, M. S. STAVER. 

